New Twiddle

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  showComponent: false,

	allConditionsMet() {
		let paramsOK = this.validateParams()
		return paramsOK
	},

	didInsertElement() {
		this.set('showComponent', this.allConditionsMet())
	},

	validateParams() {
		let x = this.get('params').x
		let y = this.get('params').y
		let data = this.get('params').data
		return (data.length && (x.length || y.length)) > 0
	}
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{my-component}}
<br>
<br>

templates.components.my-component.hbs

{{#if showComponent}}


	<div class="chart">

	</div>
  
  {{/if}}

tests.helpers.resolver.js

import Resolver from '../../resolver';
import config from '../../config/environment';

const resolver = Resolver.create();

resolver.namespace = {
  modulePrefix: config.modulePrefix,
  podModulePrefix: config.podModulePrefix
};

export default resolver;

tests.integration.components.my-component-test.js

import { moduleForComponent, test } from 'ember-qunit'
import hbs from 'htmlbars-inline-precompile'

moduleForComponent('d3-heatmap', 'Integration | Component | d3 heatmap', {
	integration: true
})

test('it displays the chart element', function (assert) {
  const dummyData = {
	x: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 ],
	y: [],
	data: [100, 101, 102, 0, 0, 106, 107, 108, 109, 110, 111, 112, 113, 114, 0, 0, 0, 0, 0, 20, 21, 22, 23, 45, 25, 34, 12, 23, 23, 130]
}
	this.set('params', dummyData)
	this.render(hbs`{{my-component params=params}}`)
	assert.equal(this.$('.chart').length, 1)
})

tests.test-helper.js

import resolver from './helpers/resolver';
import {
  setResolver
} from 'ember-qunit';

setResolver(resolver);

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}